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Journal of Nanoparticle Research

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01-04-2011 | Research Paper

Nanocomposites of titania and hybrid matrix with high refractive index

Authors: A. Antonello, G. Brusatin, M. Guglielmi, V. Bello, G. Mattei, G. Zacco, A. Martucci

Published in: Journal of Nanoparticle Research | Issue 4/2011

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Abstract

A sol–gel route for TiO₂ nanocrystals (NCs) synthesis has been developed at low temperature without surfactants. Synthetic and processing parameters have been optimized to maximize particles’ colloidal stability and crystallinity. The obtained TiO₂ NCs can be homogeneously dispersed in a sol–gel derived organic–inorganic hybrid material, resulting in homogeneous composite films when prepared by spin coating. High refractive index films were obtained with high TiO₂ NCs loading and good transparency. Furthermore, TiO₂ colloidal solutions can be used for depositing porous crystalline films, whose structural evolution has been followed under different annealing treatments. Nanocrystals were characterized by UV–Vis absorption, TEM, FT-Raman, and XRD techniques, while nanocomposite and TiO₂ films were analyzed by SEM, TEM, and spectroscopic ellipsometry.

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Title: Nanocomposites of titania and hybrid matrix with high refractive index
Authors: A. Antonello
G. Brusatin
M. Guglielmi
V. Bello
G. Mattei
G. Zacco
A. Martucci
Publication date: 01-04-2011
Publisher: Springer Netherlands
Published in: Journal of Nanoparticle Research / Issue 4/2011
Print ISSN: 1388-0764
Electronic ISSN: 1572-896X
DOI: https://doi.org/10.1007/s11051-010-9923-4

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